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Testing loop of steam generator with axial preheater

A steam generator and test circuit technology, applied in the field of enhanced heat transfer, can solve the problems of poor preheating effect of the medium in the pressure shell, etc., achieve the effect of convenient control, simple structure, and improved heating effect

Active Publication Date: 2016-12-28
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a test circuit with an axial preheater steam generator, the test circuit is to improve the existing circuit according to the particularity of the axial preheater steam generator, and the test circuit with an axial preheater The heater steam generator is used together to solve the problem of poor preheating effect of the medium in the pressure shell caused by the existing standard steam generator

Method used

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  • Testing loop of steam generator with axial preheater
  • Testing loop of steam generator with axial preheater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] like figure 1 , figure 2 As shown, a test circuit with an axial preheater steam generator includes a heat source fluid circuit 110 and a recirculation water circuit 220. The heat source fluid circuit 110 provides a heat source for recirculation water and feed water, and the recirculation water The loop 220 includes a heat exchanger 11 and a circulating pump 12. The heat exchanger 11 cools the wet steam at the wet steam outlet 1 into saturated water of a given temperature and then divides it into a cold loop 221 and a hot loop 222 through a shielded pump. The cold loop 221 Used to return saturated water with a lower temperature to the cold end of the U-shaped pipe 6, and the hot circuit is used to return saturated water with a higher temperature to the hot end of the U-shaped pipe 6; the heat source fluid circuit includes a The primary side inlet 4 and the primary side outlet 5 connected at both ends of the tube 6 form a circulation pipeline between the primary side in...

Embodiment 2

[0052] like figure 1 , figure 2 As shown, this embodiment is based on Embodiment 1, the hot circuit 222 is provided with the second heater 16; the cold circuit 221 is provided with the condenser 17; the cold circuit 221 is provided with the second regulating valve 18 , the first flow meter 19; the third regulating valve 20 and the second flow meter 21 are arranged on the hot circuit; a pressure relief valve 22 is arranged at the lower end of the inlet 2 of the hot end of the secondary side on the steam generator with an axial preheater .

Embodiment 3

[0054] like figure 1 , figure 2 As shown, this embodiment is based on Embodiment 1, the cold circuit 221 is connected to the inlet 3 of the secondary side cold end by using a grooved falcon flange, and the hot circuit 222 is connected to the inlet 2 of the secondary side hot end by using a grooved falcon flange ; The recirculation water circuit 220 is connected to the wet steam outlet 1 using a grooved falcon flange; the heat source fluid circuit 110 is connected to the primary side inlet 4 and the primary side outlet 5 using a grooved falcon flange.

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Abstract

The invention discloses a testing loop of a steam generator with an axial preheater. The testing loop comprises a heat source fluid loop and a recycled water loop. The heat source fluid loop provides a heat source for recycled water and feed water. The recycled water loop comprises a heat exchanger and a circulating pump. The heat exchanger cools wet steam at a wet steam outlet to saturated water at the given temperature and divides the water into a cold loop and a hot loop through a shielding pump. The cold loop is used for returning the saturated water at the low temperature back to the cold end of a U-shaped pipe. The hot loop is used for returning the saturated water at the high temperature back to the hot end of the U-shaped pipe. The testing loop can avoid the phenomenon that the heating effect is affected when wet steam is directly condensed and returned inside a steam generator with the axial preheater, the shielding pump divides the saturated water into the saturated water at the high temperature to be supplied to the hot loop, and the saturated water is returned to the hot end of the U-shaped pipe inside the steam generator with the axial preheater through the hot loop, so that the heating effect of the hot end of the U-shaped pipe is improved.

Description

technical field [0001] The invention relates to the technical field of heat transfer enhancement, in particular to a test circuit with an axial preheater steam generator. Background technique [0002] The principle of the standard steam generator (SG) is: the feed water entering the SG is mixed with the recirculation water of the separator and dryer located above the feed water ring, and then the mixed water flows between the pressure shroud and the tube bundle shroud until the pipe plate; then this mixed water flows into the tube bundles of the hot and cold branch surfaces at the same time in a fan-shaped surface with a 360° angle. [0003] The existing standard steam generator (SG) results in poor preheating of the medium in the pressure shell. Contents of the invention [0004] The object of the present invention is to provide a test circuit with an axial preheater steam generator, the test circuit is to improve the existing circuit according to the particularity of th...

Claims

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Application Information

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IPC IPC(8): G01M99/00
CPCG01M99/002
Inventor 黄军何灿阳刘少波王洪强顾嘉祺郎雪梅徐建军
Owner NUCLEAR POWER INSTITUTE OF CHINA
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